YourITronics

This pocket sized mp3 player is based on Microchip PIC16F877 and comes with both C and Assembly source code but the C code version has more features and stability. The mp3 player was designed to work with compact flash cards up to 100 gigabytes. For decoding it uses the VS1001K chip and for conversion it uses the built in DAC. The principle of operation is not very complicated, the PIC reads the CF card and once it finds a file it clocks the card 512 times per sector sending all the information one byte at a time to the decoder chip. The decoder gets a valid stream of data and sound comes out of the built in DAC. The project doesn’t have a display or a fancy menu, it’s just a plain simple mp3 player.

DIY Mp3 Player Based On PIC16F877: [link]

This has to be one of the most well equipped shops I’ve ever seen. At the moment I don’t have the space to host such a well equipped shop so I have to deal with the minimum requirements but someday I hope I’ll have the space to equip my shop with such a variety of tools. You can view a slideshow with all the different angles here.

This is the last post for 2009 and I promise there will be much more in 2010. In 2009 we had some interesting projects developed here at youritronics.com here is some of the highlights:

20 Band Audio Spectrum Analyzer

The analyzer is currently at v.2.0 and it has allot more features then it originally had. Kits are still being produced and the shop has a new look.

Clever Digital I/O handling in C

A nice tutorial written by Laci which caught the attention of the hobbyists.

Seven segment display explained

Another really good tutorial written by Laci an youritronics author, explaining the 7 segment display and how to use it with microcontrollers.

Matrix keyboard explained

The same good quality tutorial signed by Laci this time explaining the matrix keyboard and how it can be interfaced with a microcontroller.

RGM-3550LP GPS module connected with Asus Eee pc

The idea behind this project was born when a friend asked me too take a look at he’s broken GPS unit (MyGuide 3000) to see if I can fix anything. After figuring out that the processor is the faulty part I decided to use the gps module for a stand alone gps module that you can just connect to a netbook.

TMP275 digital sensor thermometer

The TMP275 is a 0.5°C accurate, Two-Wire, serial output temperature sensor. I got it as free sample from TI and I put together this project to experiment with the sensor.

The 3 part DIY speaker building tutorial written by youritronics author Andrei, the kind of project that gets the most out of everything using inexpensive materials:

• DIY 2.1 Speaker System – Part 1 Satellite Speakers

• DIY 2.1 Speaker System – Part 2 Satellite Speakers

• DIY 2.1 Speaker System – Part 3 Subwoofer

I would like to wish my readers a Happy New Year and may all your wishes come true. As you may have experienced, during the holidays,  hobbyists get some free time and they like spending it building stuff. In this case the author, Infernoz, build this 8 LED POV display, which seems like a fun way of wishing a happy new year. The device is based on the Attiny26 from ATMEL and from the video we can see it works quite nice, but unfortunately I was unable to locate any source code posted on the project page, but this is not that bad as you can find POV source code from others projects(POV1 POV2 POV3) if you’re interested in building one.

Happy new year 2010 POV: [via]

If your celebrating with family or friends or both may your turkey be tasty . Happy Thanksgiving!